Add flag to control dumping spvasm file

We need spvasm file only for debugging purposes, so we can disable it by default.
This change refers to online compilation path

(cherry picked from commit b20e0d2)

Author: matborzyszkowski

IGC/AdaptorOCL/ocl_igc_interface/impl/igc_ocl_translation_ctx_impl.h

@@ -181,12 +181,15 @@ CIF_DECLARE_INTERFACE_PIMPL(IgcOclTranslationCtx) : CIF::PimplBase
 
                 TC::DumpShaderFile(pOutputFolder, pInput, inputSize, hash, ".spv", nullptr);
 #if defined(IGC_SPIRV_TOOLS_ENABLED)
-                spv_text spirvAsm = nullptr;
-                if (TC::DisassembleSPIRV(pInput, inputSize, &spirvAsm) == SPV_SUCCESS)
+                if (IGC_IS_FLAG_ENABLED(SpvAsmDumpEnable))
                 {
-                    TC::DumpShaderFile(pOutputFolder, spirvAsm->str, spirvAsm->length, hash, ".spvasm", nullptr);
+                    spv_text spirvAsm = nullptr;
+                    if (TC::DisassembleSPIRV(pInput, inputSize, &spirvAsm) == SPV_SUCCESS)
+                    {
+                        TC::DumpShaderFile(pOutputFolder, spirvAsm->str, spirvAsm->length, hash, ".spvasm", nullptr);
+                    }
+                    spvTextDestroy(spirvAsm);
                 }
-                spvTextDestroy(spirvAsm);
 #endif // defined(IGC_SPIRV_TOOLS_ENABLED)
             }
             llvm::StringRef strInput = llvm::StringRef(pInput, inputSize);